It's probably not in Facebook's short term interest to offer this kind of functionality but thank goodness someone has built it. In the long run Facebook would be well served to respond meaningfully to the backlash its Platform has incurred. One of the most popular posts we've had here in months, for example, was about the news that you can now hide rarely used apps on your own profile. That probably didn't go far enough. It's things like this that are a make or break on usability and long-term user retention. People are drawn to stay because of their social connections, but they are pushed to leave by usability annoyances - why not decrease those annoyances where possible in order to make the decision to stay easier?